| Show highway building i costs cost not limited to Surf surface motorists Motorist st despite what is a road s p i te their constant use of highways m might i g ht have a difficult time answering that question evidence indicates that the average fr from OM motorist considers a road the standpoint of construction cost as a slab of surfacing material materi VII over which he drives his ca car lie he ignores the elements depre represented scripted in the right of way and the establishment of grades and laying of base materials the fundamental factors are fairly per permanent canent in other words not subject to destruction nor to maintenance and replacement costs the right of way for instance is paid for once and then may be forgotten if the grade is established to conform to official standards and it must be if it is partially financed by federal aid funds then it too is subject to but a single initial cost with road experts making enormous progress in their efforts to salvage base materials about the only factor which is subject ta d de e and wear is the actual I 1 surface if the motorist thinks of this feature as the entire road he false impression of the may get a longevity of the highway which he builds although modern expensive surfaces do show vastly improved durability in connection with their r advocacy of a better comprehension of what actually constitutes a road highway officials would have another aspect of highway life more thoroughly understood der stood it is that relating to the effect of traffic upon surface destruction st the most searching of all investigations conducted by federal scientists reveal that it is not the service it is called upon to render so much as the climatic conditions which it must resist that determines ter mines the degree of maintenance that a given highway will require |
